There is no country gifted with a greater number of exclusive bonus tracks than Japan. In fact, they get so much shoe-horned onto the end of albums that to them, a normal-length album must look like an EP.
There's a reason for this - for people in Japan, it's very often cheaper to import CDs and vinyls than it is to buy domestically. To tackle this, local CDs feature any number of special bonus tracks as an incentive to buy local.
It's both a blessing and a curse for those not lucky enough to live there. Mostly though, particularly in the days of the internet, it's a blessing. If you fancy becoming ones of those people whose favourite song by an artist in the Japanese bonus track, then these are the gems you should listen to - from Muse and Arctic Monkeys to St Vincent, Lana Del Rey and more.